Oil-filter



(No Model.)

A. S, KROTZ. OIL FILTER.

N0. 448,152. Patented Mar. 10, 1891.

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UNITED STATES ATENT OFFICE.

ALVARO S. KROTZ, OF DEFIANOE, ASSIGNOR TO HALBERT K. HITOIIOOCK, EDXVARD P). MILLER, AND BERTRAM G. \VORK, ALL OF AKRON, OHIO.

OIL-FILTER.

SPECIFICA'I ION forming part of Letters Patent No. 448,152, dated March 10, 1891.

Application filed August 21, l890. Serial Nox 362,578. (No model.)

To aZZ whom it may concern: projects a short distance above the former Be it known that I, ALVARO S. KROTZ, a and extends nearly to the bottom of the case citizen of the United States, residing at De- A, Where itterminatesin an inverted flattened fiance, in the county of Defiance and State of conical flange J, having about one-half the Ohio, have invented a certain new and useful diameterof the case A. Supported above and 55 Improvement in Oil-Filters, of which the folinclosing the upper end of the pipe I is a cap lowing is a specification. K, whose lower edge is lower than the top of My invention has relation to improvements the pipe. in filters for cleansing and purifying lubricat- Fitting inside the cylinder II is a smaller to ing-oils that have become charged with forcylinder L, open at the top and having a per- 60 eign substances, as by being used on journalforated bottom, and provided with a handle bearings, screw-cutting machinery, and for M or other suitable device by which it can be like general purposes; and it has for its obraised from the cylinder H, and in which is ject the production of a compact, simple, and placed a mass N of filtering material similar I 5 effective mechanism which shall accomplish to the layer F. 5 the desired end by successively removing the Resting on the top of the case A is a fundifferent grades of foreign matter, washing nel-shaped top 0, the lower end of which enthe oil, and delivering it in a purified stat-e. ters the cylinder II, and across the top of To the above object my invention consists which is a screen composed of parallel bars in the peculiar and novel construction and P. (Shown in cross-section.) Near the bot- 7o combination of parts hereinafter described, tom of the case A above the flange J is an inand then specifically pointed outin the claims, weirdly-projecting flange Q, of inverted-frusreference being had to the accompanying to-conical form. drawing, forming a part of this specification. In operation the case A is filled with water I11 the accompanying drawing, which is a to the'line of the cock O. The oil charged 75 vertical central section of my improved oilwith impurities is cast into the top 0, where filter, A is a cylindrical can, of sheet metal, the coarser parts are arrested by the bars P, open at the top and closed at the bottom, restand passes into the cylinder H through the ing on a suitable base 13, and provided with filtering material N, which retains finer par- 0 three cocks O O 0, arranged at different disticles that pass the screen P. In the cylinder 8c tances from the bottom. Resting on brack- H the oil is comparatively stagnant, and heavy ets B or other suitable supports within the particles of foreign matter that were too fine case A is a horizontal disk E, of sheet metal, to be arrested by the material N will gravihavinga central orifice to receive apipe, heretate to the bottom, while the oil freed there- 3 5 inafterdescrihed, and perforated outside of from passes down the tube I, and from its 85 said central orifice with a number of small lower end spreads itself in minute globules holes. On this disk is a layer F of filtering over the under face of the flange J, which, by material, as cotton waste or sponge, and on their buoyancy, roll along said flange until this rests a disk G, which serves to compress they escape from its outer edge and ascend 40 and retain the material F and by which it is through the water toward the upper part of 9c supported. This disk G has a central orifice the case A. By thus passing through the similar to the central orifice of the disk E and water the oil is washed of impurities that have for the same purpose, concentrically about escaped the screen N and have not been prewhich is a cylinder II, of sheet metal, open at cipitat-ed and rises through the filtering mathe top, having a water-tight connection with terial F, which arrests any remaining foreign 95 the disk G, inside of which cylinder the disk substances and is drawn off in a purified state is solid and outside of it perforated with small through the cock 0. Impurities lighter than holes similar to those in the disk E. water and heavier than oil will accumulate Closely fitted in the central orifices in the on top of the water and are removed through disks G E is a vertical pipe or tube 1, which the cock 0', and heavier articles washed from I00 the oil are precipitated to the bottom of the case A and drawn off through the cock 0. The flange Q is enconntered by the oil glob nles as they ascend from the outer edge of the flange J, and deflecting them from their di-' rect course causes them to be further washed.

I do not intend by the drawing and specification to confine my invention to the exact proportions shown and described; nor do I limit it to the combination of,all the parts, as some of them may be omitted-as, for instance, the flange Q, the cylinder L, and the top Oand still have an operative machine; but

What I claim, and desire to secure by Letters Patent, is-

1. The combination, with the inclosing case A, having cocks C O C projecting therefrom at different heights, filtering material F, compressed between perforated plates E G and located substantially centrally in case A,with the cylinder II resting on said plate G, and a pipe I, placed centrally in the plates E G, having a flange J projecting from its lower end, of a cap K, arranged to inclose the upper end of said pipe I, substantially as shown and described.

2. In an oil-filter, the combination of aninclosing case A and perforated plates E G, having located centrally therein a pipe I, with flange J attached to its lower end, of the annular flange Q, attached to the interior of said case A above said flangeJ and arranged to receive oil escaping over the outer edge of the flange J,substantially as shown and described, and for the purpose specified.

3. The herein-described oil-filter, consisting of the case A, cocks G C C, perforated disks E G to retain filtering material F, cylinder II, pipe I, having flange J and cap K, inner cylinder L to receive filtering material N and having a perforated bottom, and top 0, provided with parallel bars P, all con; structed and arranged substantially as shown and described, and for the purpose specified.

In testimony that I claim the above I hereunto set my hand.

N. G. JOHNSTON, K. V. HAYMAKER. 

